Ball cock



F eb. 14, 1939.

H. D. CLEMMONS BALL COCK Filed Aug. 13, 1958 INVENTOR.

n m m a @M MNT Z )i m Patented Feb. 14, 1939 lA'rgT OFFICE BALL COCK lHerbert D. Clemmons, Sturgis, Mich., assignor to Scovill ManufacturingCompany,

Mich.

Sturgis,

Application August 1s, 1938, serial No. 224,680 1o claims. (c1. 137-104)The main object of this invention is to provide a ball cock or Valveassembly for flushing tanks which effectively overcomes the possibilityof back-siphonage of water from the tank into the supply system.

A further object is to provide a structure accomplishing this resultwhich, while efficient, is very quiet in operation, is simple andeconomical in its parts, and is not likely to become clogged 1o ordefective in use.

Further objects pertaining to details and economies of the inventionwill denitely appear from thepdescription to follow. The invention isdened in the claims.

l5 A structure which embodies the features of the invention is clearlyillustrated in the accompanying drawing in which:

Fig. 1 is a side elevation of my improved assembly arranged in operativerelation within a 20 ilushing tank, the tank being shown in section.

Fig. 2 is an elevation of the assembly looking from the left of Fig. 1,the tank being sectioned on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary vertical section through 25 the valve casing andvalve.

Fig. 4 is a detail section on line 4 4 of Fig. 2.

In the embodiment of the invention illustrated in the accompanyingdrawing I represents a ushing tank and 2 the supply pipe or riser 30within the tank which is connected to a suitable water supply. This ismounted, as is customary, upon the bottom of the tank. The supply pipein the embodiment illustrated terminates in an externally conical tipportion 3, the end of which 35 constitutes a seat for the valve 4 whichis reciprocatingly mounted in the valve casing 5 mounted on the pipe 2.l

The oat 6 is operatively connected to the valve but as these operatingconnections form no 40 part of this invention they are not furtherdescribed.

The valve casing is provided with a lateral discharge arm 'I having apassage 8 therein. Water is discharged from this passage 8 throughtherde- 45 livery pipe or conduit which comprises the upright or risersection 9, this section being imperforate, and the downwardly directedspiral section I0, the lower end of which is adjacent the bottom of thetank, as illustrated. This spiral 50 delivery section has a longitudinalslot II on its inner side, the upper end oi the slot being well abovethe normal level of the water indicated at I2 and well above the top ofthe overow pipe I3. 'I'he spiral section is joined to the vertical 55section by the curved portion I4 so that water issuing or deliveredthrough the upright imperforate section is directed downwardly into thespiral section and the centrifugal force of the discharged water holdsit against the outer wall of the spiral section preventing its issuethrough the slot. At the same time air is free to enter through the slotthroughout the entire length of the spiral section.

With this arrangement of parts it is impossible for any vacuum that mayoccur in the supply 10 system to draw water from the tank, and this lstrue veven though the system may be subject to alternate pressures andvacuum while the inlet valve is open.

The rell tube I5 is connected to the valve cas- 15 ing at I6. Theventing opening II of the discharge conduit I0 is oi such character thatit is practically impossible for it to become clogged.

A further advantage of the structure is that it is quiet in operationand hissing noise is reduced to a minimum as the discharge conduit hasno restriction therein but is open for free ow of water therethroughfrom the valve casing,

I have illustrated and described my improvements in an embodiment whichI have found highly satisfactory. I have not attempted to illustrate ordescribe certain modifications or adaptations to other forms of ballcocks as I believe this disclosure will enable those skilled in the artto embody or adapt my invention as may be desired.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a valve assembly for flushing tanks, the combination with a supplypipe, of an inlet valve operatively associated therewith, a valve casingmounted on the supply pipe and having a valve chamber provided with alateral delivery passage, and a delivery pipe communicating with saidpassage and having an upright imperforate section terminating in aspiral depending section embracing the valve casing and the supply pipeand having a longitudinal slot extending from said upright portion anddisposed on the inner side of the spiral whereby the centrifugal forceoi the discharged water acts to prevent the discharged water issuingthrough the slot.

2. In a valve assembly for flushing tanks, the combination with a supplypipe and an overflow pipe, of an inlet Valve therefor mounted on saidsupply pipe, a delivery pipe communicating with said valve andcomprising an imperforate riser section extending substantially abovethe top of the overflow pipe and a downwardly drected spiral sectionembracing the supply pipe and the inlet valve and having a longitudinalslot in its inner side, the upper end of the slot being substantiallyabove the upper end of the overow pipe.

3. In a valve assembly for ushing tanks, the combination with a supplypipe and an overflow pipe, of an inlet valve therefor mounted on saidksupply pipe, a delivery pipe communicating with said valve andcomprising an imperforate riser section extending substantially abovethe top of the overiiow pipe and a downwardly directed spiral sectionembracing the supply pipe and having a longitudinal slot in its innerside, the upper end of the slot being substantially above the upper endof the overflow pipe.

4. In a valve assembly for flushing tanks, the combination with a supplypipe, of an inlet valve operatively associated therewith, and a deliverypipe for said inlet valve having an upright imperforate sectionterminating in a spiral depending section having a longitudinal slotextending from said upright portion and disposed on the inner side ofthe spiral whereby the centrifugal force of the discharged water acts toprevent the Water issuing through the slot.

5. In a valve assembly for flushing tanks, the combination with a supplypipe and an overflow pipe, of an inlet valve, a delivery pipecommunieating with said inlet valve and comprising an imperforate risersection extending substantially above the tcp of the overow pipe and adownwardly directed spiral section having a longitudinal slot in itsinner side, the upper end of the slot being substantially above theupper end of the overflow pipe.

6. In a valve assembly for ilushing tanks, the

combination with a supply pipe, of an inlet valve, and a downwardlydirected delivery conduit for said valve embracing the valve and thesupply pipe and having a longitudinal slot on the inner side of thespiral whereby the centrifugal force of the discharged water acts toprevent the water issuing through the slot and air may be admittedthereto, the-upper end of the slot being substantially above the valve.

7. In a valve assembly for ushing tanks, the combination with an inletvalve, of a downwardly directed spiral delivery conduit for said valvehaving a longitudinal slot in its inner side, the upper end of. the slotbeing substantially above the valve.

8. In a valve assembly for ushing tanks, the combination with a supplypipe and an Overow pipe, of an inlet valve controlling the delivery fromsaid supply pipe, and a downwardly directed spiral delivery conduit forsaid valve havl ing a longitudinal slot in its inner side, the upper endof the slot being substantially above the upper end of the overiiowpipe.

9. In a valve assembly for flushing tanks, the combination of an inletvalve, and a downwardly directed delivery conduit for said valve havinga longitudinal slot on the inner side of the spiral whereby thecentrifugal force of thedischarged water acts toprevent the water'issuing through the slot and air may be admitted thereto.

l 10. In a valve assembly for flushing tanks, the combination with aninlet valve, of a downwardly directed spiral delivery conduit for saidvalve having a longitudinal slot in its inner side, the upper end of theslot being above the high water level of the tank.

HERBERT D. CLEMMONS.

